A195221 - cp's OEIS frontend

A195221 Number of lower triangles of a 3 X 3 integer array with each element differing from all of its diagonal, vertical, antidiagonal and horizontal neighbors by n or less and triangles differing by a constant counted only once.

n	a(n)
1	91
2	1047
3	5453
4	18903
5	51205
6	117585
7	239891
8	447797
9	780007
10	1285459
11	2024529
12	3070235
13	4509441
14	6444061
15	8992263
16	12289673
17	16490579
18	21769135
19	28320565
20	36362367
21	46135517
22	57905673
23	71964379
24	88630269
25	108250271
26	131200811

[91, 1047, 5453, 18903, 51205, 117585, 239891, 447797, 780007, 1285459, 2024529, 3070235, 4509441, 6444061, 8992263, 12289673, 16490579, 21769135, 28320565, 36362367, 46135517, 57905673, 71964379, 88630269, 108250271, 131200811]

cp's OEIS Frontend

A195221 Number of lower triangles of a 3 X 3 integer array with each element differing from all of its diagonal, vertical, antidiagonal and horizontal neighbors by n or less and triangles differing by a constant counted only once.

Table of values

List of values